Weft-detecting mechanism



Aug. 18, 1925.

O. BOUCHARD WEFT DETECTING MECHANISM Filed Oct. 1 2, 1923 Patented Aug.18, 1925.

UNITED STATES 1,5493% PATENT caries.

ONESIME no ucnann, or SHAWSHEEN VILLAGE, ANDOVEB, MASSACHUSETTS, as

SIGN'OR TO CROIVIPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS,

A CQRPORATION OF MASSACHUSETTS THEFT-DETECTING MECHANISM.

Application filed October 12, 1923. Serial No. 668,078.

To all whom it may concern:

' Be it known that I, ONnsrMn B'OUCHARD, acitizen of the United States,residing at 'Shawsh-een Village, Andover, in'the county of Essex andState of Massachusetts, have invented a new and useful iVeft-DetectingMechanism, of which the following is a specification. 1

This invention relates to weft detecting mechanism of the multipleplunger type, as shown for instance in the prior application of Eppa H.Ryon, Serial N 0. 509,113, filed October 20, 1921. It has been foundthat such detecting mechanism is liable to injury "when engaged by amisplaced bobbin and it has been heretofore pro-posed to provide ayielding stand or mounting for the detecting mechanism, by the use ofwhich such injury may be largely avoided. It is the ob ject of myinvention to provide an improved construction and arrangement of partsby which the detector stand may be supported for such yielding movement.

A preferred form of my invention is shown in the drawings in which- Fig.l is a side elevation of my improved detecting mechanism, with theshuttle and shuttle boxes shown in section;

Fig. 2 is a front elevation of the parts shown in Fig. 1;

Fig. 3 is av sectional plan view, taken along the line 3-3 in Fig. 1;

Fig; 4 is a. sectional rear elevation, taken along the line 44 in Fig.3;

Fig. 5 is a sectional side elevation, taken along the line 5-5 in Fig.4, and

Fig. 6 is a perspective view of a detail part to be described.

Referring to the drawings, I have shown a portion of a loom frame 10 towhich is secured the usual magazine frame 11 on which a weft carriertransferrer 12 is pivoted at 13. A plate or bracket 14 is securedby abolt 1.5 to the loom frame 10 and provides a support for the detectorstand 16. The

stand 16 has a rearward projection 17 which extends through an openingin the bracket 14 and which provides a rear bearing for a plurality ofU-shaped detector rods or plungers 18.

A front bearing for the pluugers 18 is also provided in the stand 16, asclearly shown in Fig. 5, and the rearwardly extended short upper ends 18of the rods or plungers 18 normally extend into "the path of a floatinglever 19 (Fig. '2) pivot a lly connec'ted at 20 ":to the lower end of alink 21, and also pivoted at-22 to an actuating rod 23. The link 21 isconnected to suitable mechanism by which substantial exhaustion of weftin the active shuttle may be indicated and a selected fresh wcf tcarrier may be released,

The parts thus far described are in general of the usual type and inthemselves form no part of my present invention, which relatesparticularly to improved means for yieldiugly securing the stand 16 tothe bracket 14. For this purpose I provide a forwardly extending springframe 25 (Fig. 6), preferably formed of sheet metal with open centralportion and a-d-aptedto be "rear side of the bracket 14 by a cross pin32.

The openings 27, 28 and 29 are of substantially greater diameter thanthe spring 30 and thus permit free rocking movement of the stand 16 andspring frame 25 in any direction, while remaining effective to returnthe stand to its seat immediately upon release thereof. The spring frame25 is preferably formed with a forwardly and upwardly extending flange33 which forms a stop to limit forward movement of the plungers 18.

The general method of operation of the multiple plunger weft detector iswell known and fully described in prior patents and applications.Further description thereof is not believed necessary, as my inventionrelates specifically to the improved construction by which an elongatedtension spring may be used in such a way as to permit free yieldingmovement of the stand in any direction. It is believed that this is amarked improvement over the constructions heretofore known or used.

Having thus described my invention, what I claim is 1. In a weftdetecting mechanism, a stand, a fixed frame member by which said standis supported, and means to yieldingly secure said stand to said member,said means comprising a forwardly extending spring frame mounted on saidstand, and a tension spring secured to said spring frame at one end andto said fixed member at the other end and holding said parts inyieldingly contact.

2. In a weft detecting mechanism, a stand, a fixed frame member by whichsaid stand is supported, and means to yieldingly secure said stand tosaid member, said means comprising a forwardly extending spring framemounted on said stand and having an open center portion, and a tensionspring secured to said spring frame at one end and extending throughsaid open center portion and having its opposite end secured to saidfixed frame member.

3. In a weft detecting mechanism, a stand, a fixed frame member by whichsaid stand is supported, and means to yieldingly secure said stand tosaid member, said means comprising a forwardly extending spring framemounted on said stand and having an open center portion, and a tensionspring secured to said spring frame at one end and extending throughsaid open center portion and having its opposite end extending throughaligned openings. in said stand and fixed frame member and secured atthe rear of said member.

4. As an article of manufacture, a spring frame for a weft detectingmechanism, said frame being formed with an open center portion toreceive a tension spring and having mans for attaching one end of thespring thereto.

5. In a weft detecting mechanism, a fixed frame, a detector supportingstand mounted in normal fixed position on said frame but movable withrespect thereto in vertical and horizontal planes, a detector slidablymounted in said stand, and resilient means holding said stand and framein operative relation and having one end anchored with respect to theframe and the other end anchored with respect to the stand, that portionof said resilient means anchored to the stand being free to bend withrespect to the portion anchored to the fixed frame.

(5. In a weft detecting mechanism, a fixed frame a detector supportingstand mounted in normal fixed position on said frame but movable invertical and horizontal planes with respect to said frame, a detectorslidably mounted in said stand and resilient means passing through saidf 'ame and stand and having the ends thereof anchored respectively inthe stand and frame, that portion of the resilient means in the standbeing capable of lateral movement with re spect to that portion lying inthe frame.

7. in a weft detecting mechanism, a fixed frame, a detector sumportingstand mounted in normal fixed position on said frame but movable invertical and horizontal planes, :1 (.letector slidably mounted in saidstand, and a spring having one end anchored with respect. to the frameand the other end anchored with respect to the stand and passing throughsaid frame and stand.

In a weft detecting mechanism, a fixed frame, a detector supportingstand mounted on said frame and movable in vertical and horizontalplanes with respect thereto, and resilient means free to bend on itsaxis supported at the ends respectively by said frame and stand, theportion of said resilient means in said stand being movable to aposition out of alignment with the portion in said frame when said standmoves vertically or horizontally with respect to the frame.

In testimony whereof I have hereunto aliixed my signature.

ONESIME BOUCHARD.

